and deflects the sensor plate, in relation to the VOLUME of air that passes it, not the MASS. The movement to MAF/Hot wire systems was primarily for acuracy because engines burn weight (or mass) of air. Colder air is more dense, has more O2 (for a given volume)and needs more gas to match the "ideal" 14.7 to 1 ratio, than warm air. Air Temp sensors are in CIS sytems (like alitude sensors) for this reason, MAF/Hot wire doesn't need them. Altitude increase, like warming, makes air less dense for a given volume, which means Less O2 and needs less fuel. The aircraft jet engines, that I fly and used to work on, measure fuel flow in lbs per hr to match the huge air temp swings on a normal flight because Jet fuel changes its BTU's per gallon ,but not BTU's per lbs. if temp changes (just like air/O2) it is the most accurate way to measure Fuel Flow. Geez, this makes my head hurt.....anyway....so should the EHA mA's in a car @ 6000Ft. look similar to a sea level mA's???